BRACHIOPODA. 357 



Family TEREBRATELLIDM Kmo. 



Tropidoleptus, Hall, 1857. 



Sub-order Helicopegmata, or Spiriferacea, Waagen. 



Family ATRYPIDJE, Ball. 



Hallina, N. H. Winchell and Schuchert, Catazyga, Hall, 1893. 



1892. Glassia, Davidson, 1882. 



Protozyga, Hall, 1893. Atrypina, Hall, 1893. 



(?) Cyclospira, Hall, 1893. (?) Clintonella, Hall, 1893. 



Zygospira, Hall, 1862. Atrypa, Dalman, 1828. 



Anazxjga, Davidson, 1882. Karpinskia, Tschernyschew, 1885. 



ORTHONOMiEA, Hall, 1858. Gruenewaldtia, Tschernyschew, 1885 



FAJcaT SPIRIFERINID^ Davidson. 



Cyrtina, Davidson, 1858. Spiriferina, d'Orbigny, 1847. 



Family SPIRIFERIDJE, Kino. 



Spirifer, Sowerby, 1815. Martini A, McCoy, 1844. 



Trigonotreta, Koenig, 1825. Martiniopsis, Waagen, 1883. 



Brachythyris, McCoy, 1844. Cyrtia, Dalman, 1828. 



Fusella, McCoy, 1844. Syringothyris, A. Winchell, 1863, 

 Choristites, Fischer deWaldheim, 1825. Amboc(elia, Hall, 1860. 



Delthyris, Dalman, 1828. Metaplasia, Hall, 1893. 



Reticolaria, McCoy, 1844. Verneuilia, Hall, 1893. 



Family NUCLEOSPIRID^ Davidson. 



Ndcleospira, Hall, 1858. Whitfieldella, Hall, 1893. 



Dayia, Davidson, 1882. Hyattella, Hall, 1893. 



Hindella, Davidson, 1882. (?) Camarospira, Hall, 1893. 



Familt CCEL08PIRIDJE. 



Anoplotheca, Sandberger, 1856, Leptoccelia, Hall, 1859. 



Bx^da, Davidson, 1882. (?) Anabaia, Clarke, 1893, 



C(elospira, Hall, 1863. 



